CVE-2020-26405

Severity: high (CVSS 7.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-11-17 · updated 2026-06-17
Weakness: CWE-22

Description

Path traversal vulnerability in package upload functionality in GitLab CE/EE starting from 12.8 allows an attacker to save packages in arbitrary locations. Affected versions are >=12.8, <13.3.9,>=13.4, <13.4.5,>=13.5, <13.5.2.

Affected products

GitLab: from 12.8.0 before 13.3.9; from 13.4.0 before 13.4.5; from 13.5.0 before 13.5.2 — fixed in 13.3.9, 13.4.5, 13.5.2

How to fix

Upgrade to a fixed version: GitLab 13.3.9, 13.4.5, 13.5.2. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-26405.json
https://gitlab.com/gitlab-org/gitlab/-/issues/247371
https://hackerone.com/reports/835427
https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-26405.json
https://gitlab.com/gitlab-org/gitlab/-/issues/247371
https://hackerone.com/reports/835427

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